/**
 * @license AngularJS v1.2.4
 * (c) 2010-2014 Google, Inc. http://angularjs.org
 * License: MIT
 */
(function (window, angular, undefined) {
    'use strict';

    var $resourceMinErr = angular.$$minErr('$resource');

// Helper functions and regex to lookup a dotted path on an object
// stopping at undefined/null.  The path must be composed of ASCII
// identifiers (just like $parse)
    var MEMBER_NAME_REGEX = /^(\.[a-zA-Z_$][0-9a-zA-Z_$]*)+$/;

    function isValidDottedPath(path) {
        return (path != null && path !== '' && path !== 'hasOwnProperty' &&
        MEMBER_NAME_REGEX.test('.' + path));
    }

    function lookupDottedPath(obj, path) {
        if (!isValidDottedPath(path)) {
            throw $resourceMinErr('badmember', 'Dotted member path "@{0}" is invalid.', path);
        }
        var keys = path.split('.');
        for (var i = 0, ii = keys.length; i < ii && obj !== undefined; i++) {
            var key = keys[i];
            obj = (obj !== null) ? obj[key] : undefined;
        }
        return obj;
    }

    /**
     * @ngdoc overview
     * @name ngResource
     * @description
     *
     * # ngResource
     *
     * The `ngResource` module provides interaction support with RESTful services
     * via the $resource service.
     *
     * {@installModule resource}
     *
     * <div doc-module-components="ngResource"></div>
     *
     * See {@link ngResource.$resource `$resource`} for usage.
     */

    /**
     * @ngdoc object
     * @name ngResource.$resource
     * @requires $http
     *
     * @description
     * A factory which creates a resource object that lets you interact with
     * [RESTful](http://en.wikipedia.org/wiki/Representational_State_Transfer) server-side data sources.
     *
     * The returned resource object has action methods which provide high-level behaviors without
     * the need to interact with the low level {@link ng.$http $http} service.
     *
     * Requires the {@link ngResource `ngResource`} module to be installed.
     *
     * @param {string} url A parametrized URL template with parameters prefixed by `:` as in
     *   `/user/:username`. If you are using a URL with a port number (e.g.
     *   `http://example.com:8080/api`), it will be respected.
     *
     *   If you are using a url with a suffix, just add the suffix, like this:
     *   `$resource('http://example.com/resource.json')` or `$resource('http://example.com/:id.json')`
     *   or even `$resource('http://example.com/resource/:resource_id.:format')`
     *   If the parameter before the suffix is empty, :resource_id in this case, then the `/.` will be
     *   collapsed down to a single `.`.  If you need this sequence to appear and not collapse then you
     *   can escape it with `/\.`.
     *
     * @param {Object=} paramDefaults Default values for `url` parameters. These can be overridden in
     *   `actions` methods. If any of the parameter value is a function, it will be executed every time
     *   when a param value needs to be obtained for a request (unless the param was overridden).
     *
     *   Each key value in the parameter object is first bound to url template if present and then any
     *   excess keys are appended to the url search query after the `?`.
     *
     *   Given a template `/path/:verb` and parameter `{verb:'greet', salutation:'Hello'}` results in
     *   URL `/path/greet?salutation=Hello`.
     *
     *   If the parameter value is prefixed with `@` then the value of that parameter is extracted from
     *   the data object (useful for non-GET operations).
     *
     * @param {Object.<Object>=} actions Hash with declaration of custom action that should extend the
     *   default set of resource actions. The declaration should be created in the format of {@link
        *   ng.$http#usage_parameters $http.config}:
     *
     *       {action1: {method:?, params:?, isArray:?, headers:?, ...},
 *        action2: {method:?, params:?, isArray:?, headers:?, ...},
 *        ...}
     *
     *   Where:
     *
     *   - **`action`** – {string} – The name of action. This name becomes the name of the method on
     *     your resource object.
     *   - **`method`** – {string} – HTTP request method. Valid methods are: `GET`, `POST`, `PUT`,
     *     `DELETE`, and `JSONP`.
     *   - **`params`** – {Object=} – Optional set of pre-bound parameters for this action. If any of
     *     the parameter value is a function, it will be executed every time when a param value needs to
     *     be obtained for a request (unless the param was overridden).
     *   - **`url`** – {string} – action specific `url` override. The url templating is supported just
     *     like for the resource-level urls.
     *   - **`isArray`** – {boolean=} – If true then the returned object for this action is an array,
     *     see `returns` section.
     *   - **`transformRequest`** –
     *     `{function(data, headersGetter)|Array.<function(data, headersGetter)>}` –
     *     transform function or an array of such functions. The transform function takes the http
     *     request body and headers and returns its transformed (typically serialized) version.
     *   - **`transformResponse`** –
     *     `{function(data, headersGetter)|Array.<function(data, headersGetter)>}` –
     *     transform function or an array of such functions. The transform function takes the http
     *     response body and headers and returns its transformed (typically deserialized) version.
     *   - **`cache`** – `{boolean|Cache}` – If true, a default $http cache will be used to cache the
     *     GET request, otherwise if a cache instance built with
     *     {@link ng.$cacheFactory $cacheFactory}, this cache will be used for
     *     caching.
     *   - **`timeout`** – `{number|Promise}` – timeout in milliseconds, or {@link ng.$q promise} that
     *     should abort the request when resolved.
     *   - **`withCredentials`** - `{boolean}` - whether to set the `withCredentials` flag on the
     *     XHR object. See {@link https://developer.mozilla.org/en/http_access_control#section_5
 *     requests with credentials} for more information.
     *   - **`responseType`** - `{string}` - see {@link
        *     https://developer.mozilla.org/en-US/docs/DOM/XMLHttpRequest#responseType requestType}.
     *   - **`interceptor`** - `{Object=}` - The interceptor object has two optional methods -
     *     `response` and `responseError`. Both `response` and `responseError` interceptors get called
     *     with `http response` object. See {@link ng.$http $http interceptors}.
     *
     * @returns {Object} A resource "class" object with methods for the default set of resource actions
     *   optionally extended with custom `actions`. The default set contains these actions:
     *
     *       { 'get':    {method:'GET'},
 *         'save':   {method:'POST'},
 *         'query':  {method:'GET', isArray:true},
 *         'remove': {method:'DELETE'},
 *         'delete': {method:'DELETE'} };
     *
     *   Calling these methods invoke an {@link ng.$http} with the specified http method,
     *   destination and parameters. When the data is returned from the server then the object is an
     *   instance of the resource class. The actions `save`, `remove` and `delete` are available on it
     *   as  methods with the `$` prefix. This allows you to easily perform CRUD operations (create,
     *   read, update, delete) on server-side data like this:
     *   <pre>
     var User = $resource('/user/:userId', {userId:'@id'});
     var user = User.get({userId:123}, function() {
          user.abc = true;
          user.$save();
        });
     </pre>
     *
     *   It is important to realize that invoking a $resource object method immediately returns an
     *   empty reference (object or array depending on `isArray`). Once the data is returned from the
     *   server the existing reference is populated with the actual data. This is a useful trick since
     *   usually the resource is assigned to a model which is then rendered by the view. Having an empty
     *   object results in no rendering, once the data arrives from the server then the object is
     *   populated with the data and the view automatically re-renders itself showing the new data. This
     *   means that in most cases one never has to write a callback function for the action methods.
     *
     *   The action methods on the class object or instance object can be invoked with the following
     *   parameters:
     *
     *   - HTTP GET "class" actions: `Resource.action([parameters], [success], [error])`
     *   - non-GET "class" actions: `Resource.action([parameters], postData, [success], [error])`
     *   - non-GET instance actions:  `instance.$action([parameters], [success], [error])`
     *
     *   Success callback is called with (value, responseHeaders) arguments. Error callback is called
     *   with (httpResponse) argument.
     *
     *   Class actions return empty instance (with additional properties below).
     *   Instance actions return promise of the action.
     *
     *   The Resource instances and collection have these additional properties:
     *
     *   - `$promise`: the {@link ng.$q promise} of the original server interaction that created this
     *     instance or collection.
     *
     *     On success, the promise is resolved with the same resource instance or collection object,
     *     updated with data from server. This makes it easy to use in
     *     {@link ngRoute.$routeProvider resolve section of $routeProvider.when()} to defer view
     *     rendering until the resource(s) are loaded.
     *
     *     On failure, the promise is resolved with the {@link ng.$http http response} object, without
     *     the `resource` property.
     *
     *   - `$resolved`: `true` after first server interaction is completed (either with success or
     *      rejection), `false` before that. Knowing if the Resource has been resolved is useful in
     *      data-binding.
     *
     * @example
     *
     * # Credit card resource
     *
     * <pre>
     // Define CreditCard class
     var CreditCard = $resource('/user/:userId/card/:cardId',
     {userId:123, cardId:'@id'}, {
       charge: {method:'POST', params:{charge:true}}
      });

     // We can retrieve a collection from the server
     var cards = CreditCard.query(function() {
       // GET: /user/123/card
       // server returns: [ {id:456, number:'1234', name:'Smith'} ];

       var card = cards[0];
       // each item is an instance of CreditCard
       expect(card instanceof CreditCard).toEqual(true);
       card.name = "J. Smith";
       // non GET methods are mapped onto the instances
       card.$save();
       // POST: /user/123/card/456 {id:456, number:'1234', name:'J. Smith'}
       // server returns: {id:456, number:'1234', name: 'J. Smith'};

       // our custom method is mapped as well.
       card.$charge({amount:9.99});
       // POST: /user/123/card/456?amount=9.99&charge=true {id:456, number:'1234', name:'J. Smith'}
     });

     // we can create an instance as well
     var newCard = new CreditCard({number:'0123'});
     newCard.name = "Mike Smith";
     newCard.$save();
     // POST: /user/123/card {number:'0123', name:'Mike Smith'}
     // server returns: {id:789, number:'01234', name: 'Mike Smith'};
     expect(newCard.id).toEqual(789);
     * </pre>
     *
     * The object returned from this function execution is a resource "class" which has "static" method
     * for each action in the definition.
     *
     * Calling these methods invoke `$http` on the `url` template with the given `method`, `params` and
     * `headers`.
     * When the data is returned from the server then the object is an instance of the resource type and
     * all of the non-GET methods are available with `$` prefix. This allows you to easily support CRUD
     * operations (create, read, update, delete) on server-side data.

     <pre>
     var User = $resource('/user/:userId', {userId:'@id'});
     var user = User.get({userId:123}, function() {
       user.abc = true;
       user.$save();
     });
     </pre>
     *
     * It's worth noting that the success callback for `get`, `query` and other methods gets passed
     * in the response that came from the server as well as $http header getter function, so one
     * could rewrite the above example and get access to http headers as:
     *
     <pre>
     var User = $resource('/user/:userId', {userId:'@id'});
     User.get({userId:123}, function(u, getResponseHeaders){
       u.abc = true;
       u.$save(function(u, putResponseHeaders) {
         //u => saved user object
         //putResponseHeaders => $http header getter
       });
     });
     </pre>
     */
    angular.module('ngResource', ['ng']).factory('$resource', ['$http', '$q', function ($http, $q) {

        var DEFAULT_ACTIONS = {
            'get': {method: 'GET'},
            'save': {method: 'POST'},
            'query': {method: 'GET', isArray: true},
            'remove': {method: 'DELETE'},
            'delete': {method: 'DELETE'}
        };
        var noop = angular.noop,
            forEach = angular.forEach,
            extend = angular.extend,
            copy = angular.copy,
            isFunction = angular.isFunction;

        /**
         * We need our custom method because encodeURIComponent is too aggressive and doesn't follow
         * http://www.ietf.org/rfc/rfc3986.txt with regards to the character set (pchar) allowed in path
         * segments:
         *    segment       = *pchar
         *    pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
         *    pct-encoded   = "%" HEXDIG HEXDIG
         *    unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"
         *    sub-delims    = "!" / "$" / "&" / "'" / "(" / ")"
         *                     / "*" / "+" / "," / ";" / "="
         */
        function encodeUriSegment(val) {
            return encodeUriQuery(val, true).replace(/%26/gi, '&').replace(/%3D/gi, '=').replace(/%2B/gi, '+');
        }


        /**
         * This method is intended for encoding *key* or *value* parts of query component. We need a
         * custom method because encodeURIComponent is too aggressive and encodes stuff that doesn't
         * have to be encoded per http://tools.ietf.org/html/rfc3986:
         *    query       = *( pchar / "/" / "?" )
         *    pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
         *    unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"
         *    pct-encoded   = "%" HEXDIG HEXDIG
         *    sub-delims    = "!" / "$" / "&" / "'" / "(" / ")"
         *                     / "*" / "+" / "," / ";" / "="
         */
        function encodeUriQuery(val, pctEncodeSpaces) {
            return encodeURIComponent(val).replace(/%40/gi, '@').replace(/%3A/gi, ':').replace(/%24/g, '$').replace(/%2C/gi, ',').replace(/%20/g, (pctEncodeSpaces ? '%20' : '+'));
        }

        function Route(template, defaults) {
            this.template = template;
            this.defaults = defaults || {};
            this.urlParams = {};
        }

        Route.prototype = {
            setUrlParams: function (config, params, actionUrl) {
                var self = this,
                    url = actionUrl || self.template,
                    val,
                    encodedVal;

                var urlParams = self.urlParams = {};
                forEach(url.split(/\W/), function (param) {
                    if (param === 'hasOwnProperty') {
                        throw $resourceMinErr('badname', "hasOwnProperty is not a valid parameter name.");
                    }
                    if (!(new RegExp("^\\d+$").test(param)) && param &&
                        (new RegExp("(^|[^\\\\]):" + param + "(\\W|$)").test(url))) {
                        urlParams[param] = true;
                    }
                });
                url = url.replace(/\\:/g, ':');

                params = params || {};
                forEach(self.urlParams, function (_, urlParam) {
                    val = params.hasOwnProperty(urlParam) ? params[urlParam] : self.defaults[urlParam];
                    if (angular.isDefined(val) && val !== null) {
                        encodedVal = encodeUriSegment(val);
                        url = url.replace(new RegExp(":" + urlParam + "(\\W|$)", "g"), encodedVal + "$1");
                    } else {
                        url = url.replace(new RegExp("(\/?):" + urlParam + "(\\W|$)", "g"), function (match,
                                                                                                      leadingSlashes, tail) {
                            if (tail.charAt(0) == '/') {
                                return tail;
                            } else {
                                return leadingSlashes + tail;
                            }
                        });
                    }
                });

                // strip trailing slashes and set the url
                url = url.replace(/\/+$/, '');
                // then replace collapse `/.` if found in the last URL path segment before the query
                // E.g. `http://url.com/id./format?q=x` becomes `http://url.com/id.format?q=x`
                url = url.replace(/\/\.(?=\w+($|\?))/, '.');
                // replace escaped `/\.` with `/.`
                config.url = url.replace(/\/\\\./, '/.');


                // set params - delegate param encoding to $http
                forEach(params, function (value, key) {
                    if (!self.urlParams[key]) {
                        config.params = config.params || {};
                        config.params[key] = value;
                    }
                });
            }
        };


        function resourceFactory(url, paramDefaults, actions) {
            var route = new Route(url);

            actions = extend({}, DEFAULT_ACTIONS, actions);

            function extractParams(data, actionParams) {
                var ids = {};
                actionParams = extend({}, paramDefaults, actionParams);
                forEach(actionParams, function (value, key) {
                    if (isFunction(value)) {
                        value = value();
                    }
                    ids[key] = value && value.charAt && value.charAt(0) == '@' ?
                        lookupDottedPath(data, value.substr(1)) : value;
                });
                return ids;
            }

            function defaultResponseInterceptor(response) {
                return response.resource;
            }

            function Resource(value) {
                copy(value || {}, this);
            }

            forEach(actions, function (action, name) {
                var hasBody = /^(POST|PUT|PATCH)$/i.test(action.method);

                Resource[name] = function (a1, a2, a3, a4) {
                    var params = {}, data, success, error;

                    /* jshint -W086 */
                    /* (purposefully fall through case statements) */
                    switch (arguments.length) {
                        case 4:
                            error = a4;
                            success = a3;
                        //fallthrough
                        case 3:
                        case 2:
                            if (isFunction(a2)) {
                                if (isFunction(a1)) {
                                    success = a1;
                                    error = a2;
                                    break;
                                }

                                success = a2;
                                error = a3;
                                //fallthrough
                            } else {
                                params = a1;
                                data = a2;
                                success = a3;
                                break;
                            }
                        case 1:
                            if (isFunction(a1)) success = a1;
                            else if (hasBody) data = a1;
                            else params = a1;
                            break;
                        case 0:
                            break;
                        default:
                            throw $resourceMinErr('badargs',
                                "Expected up to 4 arguments [params, data, success, error], got {0} arguments",
                                arguments.length);
                    }
                    /* jshint +W086 */
                    /* (purposefully fall through case statements) */

                    var isInstanceCall = this instanceof Resource;
                    var value = isInstanceCall ? data : (action.isArray ? [] : new Resource(data));
                    var httpConfig = {};
                    var responseInterceptor = action.interceptor && action.interceptor.response ||
                        defaultResponseInterceptor;
                    var responseErrorInterceptor = action.interceptor && action.interceptor.responseError ||
                        undefined;

                    forEach(action, function (value, key) {
                        if (key != 'params' && key != 'isArray' && key != 'interceptor') {
                            httpConfig[key] = copy(value);
                        }
                    });

                    if (hasBody) httpConfig.data = data;
                    route.setUrlParams(httpConfig,
                        extend({}, extractParams(data, action.params || {}), params),
                        action.url);

                    var promise = $http(httpConfig).then(function (response) {
                        var data = response.data,
                            promise = value.$promise;

                        if (data) {
                            // Need to convert action.isArray to boolean in case it is undefined
                            // jshint -W018
                            if (angular.isArray(data) !== (!!action.isArray)) {
                                throw $resourceMinErr('badcfg', 'Error in resource configuration. Expected ' +
                                    'response to contain an {0} but got an {1}',
                                    action.isArray ? 'array' : 'object', angular.isArray(data) ? 'array' : 'object');
                            }
                            // jshint +W018
                            if (action.isArray) {
                                value.length = 0;
                                forEach(data, function (item) {
                                    value.push(new Resource(item));
                                });
                            } else {
                                copy(data, value);
                                value.$promise = promise;
                            }
                        }

                        value.$resolved = true;

                        response.resource = value;

                        return response;
                    }, function (response) {
                        value.$resolved = true;

                        (error || noop)(response);

                        return $q.reject(response);
                    });

                    promise = promise.then(
                        function (response) {
                            var value = responseInterceptor(response);
                            (success || noop)(value, response.headers);
                            return value;
                        },
                        responseErrorInterceptor);

                    if (!isInstanceCall) {
                        // we are creating instance / collection
                        // - set the initial promise
                        // - return the instance / collection
                        value.$promise = promise;
                        value.$resolved = false;

                        return value;
                    }

                    // instance call
                    return promise;
                };


                Resource.prototype['$' + name] = function (params, success, error) {
                    if (isFunction(params)) {
                        error = success;
                        success = params;
                        params = {};
                    }
                    var result = Resource[name].call(this, params, this, success, error);
                    return result.$promise || result;
                };
            });

            Resource.bind = function (additionalParamDefaults) {
                return resourceFactory(url, extend({}, paramDefaults, additionalParamDefaults), actions);
            };

            return Resource;
        }

        return resourceFactory;
    }]);


})(window, window.angular);
